:root {
  --bg: #0f1720;
  --panel: #1a2430;
  --panel-2: #232f3d;
  --text: #e6ecf1;
  --muted: #8a98a8;
  --accent: #4fb3ff;
  --ok: #4ade80;
  --off: #6b7280;
  --warn: #fbbf24;
  --err: #f87171;
  --border: #2b3847;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

body.auth {
  display: grid;
  place-items: center;
  min-height: 100vh;
  padding: 1rem;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 1.5rem;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
  gap: 1rem;
}
.topbar h1 { margin: 0; font-size: 1.2rem; }
.topbar nav { display: flex; gap: 1rem; align-items: center; }
.topbar a { color: var(--accent); text-decoration: none; }
.topbar a:hover { text-decoration: underline; }

main {
  max-width: 1100px;
  margin: 1.5rem auto;
  padding: 0 1rem;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
}
body.auth .card {
  width: min(420px, 100%);
  margin: 0;
}

h1, h2 { margin-top: 0; }
h2 { font-size: 1.1rem; color: var(--accent); margin-bottom: 1rem; }

.muted { color: var(--muted); font-size: 0.9rem; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
}

dl {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.4rem 1rem;
  margin: 0;
}
dt { color: var(--muted); }
dd { margin: 0; font-weight: 500; }
dd.on { color: var(--ok); font-weight: 700; }
dd.off { color: var(--off); }

form label {
  display: block;
  margin: 0.75rem 0;
  font-size: 0.95rem;
}
form label.inline {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
input[type=email], input[type=password], input[type=text], input[type=number] {
  width: 100%;
  padding: 0.6rem 0.75rem;
  background: var(--panel-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font: inherit;
  margin-top: 0.25rem;
}
input[type=number] {
  width: 5rem;
}

button {
  background: var(--accent);
  color: #05101c;
  border: 0;
  border-radius: 6px;
  padding: 0.55rem 1rem;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
}
button:hover { filter: brightness(1.1); }
button.btn-on { background: var(--ok); }
button.btn-off { background: var(--off); color: var(--text); }

.inline-form {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  margin: 0.3rem 0.25rem 0.3rem 0;
}

.relay-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0;
  border-top: 1px solid var(--border);
}
.relay-row:first-of-type { border-top: 0; }
.relay-row strong { min-width: 9rem; }

.ok {
  background: rgba(74, 222, 128, 0.15);
  color: var(--ok);
  border: 1px solid var(--ok);
  border-radius: 6px;
  padding: 0.6rem 0.9rem;
  margin-bottom: 1rem;
}
.err {
  background: rgba(248, 113, 113, 0.15);
  color: var(--err);
  border: 1px solid var(--err);
  border-radius: 6px;
  padding: 0.6rem 0.9rem;
  margin-bottom: 1rem;
}
.warn {
  color: var(--warn);
  font-weight: 600;
}

.log {
  background: var(--panel-2);
  color: var(--muted);
  padding: 0.75rem;
  border-radius: 6px;
  max-height: 400px;
  overflow: auto;
  font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.82rem;
  white-space: pre-wrap;
  word-break: break-all;
  margin: 0;
}